Apple Workgroup Server 8150/110 - Manual (Page 66)

Compatible tapes
Your internal DAT (digital audio tape) drive is compatible with MRS-quality
DDS (digital data storage) tape cassettes. MRS (Media Recognition System)
cassettes are the highest-quality digital data tape available. Your internal tape
drive requires this level of quality to perform backup operations successfully.
See your Apple-authorized service provider for more MRS-quality DDS tape
cassettes or their compatible substitutes. Compatible cassettes are typically
stamped “Digital Data Storage” and longer-length cassettes (120 meters) need
the “DDS2” designation. If you use cassettes not approved by your Apple-
authorized service provider, you void the warranty on your tape drive.
IMPORTANT Some vendors of computer products may refer to DDS cassettes as
digital audio tape (DAT) cassettes. However, DAT (audio) cassettes have a
different mechanical specification from DDS cassettes. For backing up your
server files, be sure to use only those DAT cassettes designed for MRS.
Tapes supplied with the server
Two cassettes are supplied with your Workgroup Server 8150. The first is a
blank DDS cassette for backup and restore operations. (The blank tape
included with your system has a maximum storage capacity of 10–14
gigabytes of compressed data.) The second is a cleaning cassette; its operation
is discussed later in this chapter.
Starting up the tape drive
The tape drive receives power and performs a self-test when you start up your
server. During the test, both status lights next to the tape drive opening are
solid green; then the light on the left flashes green and the light on the right
turns off. If no tape is loaded in the tape drive, both status lights turn off. If a
tape is loaded in the tape drive, the light on the left becomes solid green.
50 Chapter 5 / Using a DAT Drive and Tape Cassettes